Lecture 2 Flashcards
What is a circuit?
A collection of separate elements connected at their terminals.
What is a node?
A junction between two ore more circput elements, other than perfect conductors, are joined.
What is a branch (also known as an edge)?
The connection between the nodes
What is loop?
A closed path through a circuit along its branches.
What is branch current?
Current along the branch of a circuit.
What is branch voltage?
Potential difference measured across a branch.
What is Kirchhoff’s current law?
The current flowing put of any node in a circuit must equal the current flowing in. (sum of current flowing in must equal zero)
What are two names for the basic method of circuit analysis?
- KVL and KCL method
- Fundamental method
What are the steps for the basic method of circuit analysis?
What is Kirchoff’s voltage law?
The algebraicsum of the branch voltages around any closed path in a network must be zero.
Therefore the voltage between two nodes is independent of the path along which it is accumulated.
What is the KVL and KCL method?
- Define branch current and voltage in a consistent manner for each element (positive into positive terminal)
- Assemble element laws for each element.
- Apply Kitchhoff’s current and voltage laws
- Jointly solve equations from step 2 and 3 to find variables from step 1.
What is the relationship between branch voltages in series?
Series components all carry the same branch current
Which node ought te be selected for ground?
The one with the most elements/sources
What is a super node?
A technique used in nodal analysis to simplify circuit analysis when voltage sources are connected between non-reference nodes by combining those nodes into a single node.
What is the intuitive method?
It utilizes curtent and voltage dividers to collapse and then expand the circuit, simplifying it and then adding in more variables.
